Manipulator for rolling mills



2 Sheets-Sheet 1 AMP] f TE IIKI? Aug. 25, 1931. A. T. KELLER 1MANI'PULATOR FOR ROLLING MILLS Filed Feb. 8. 1930 w & i

Aug. 25, 1931. A. T. KELLER MANIPULATOR FOR ROLLING MILLS I 2Sheets-Sheet 2 Filed Feb. 8. 1930 MA M RA w :il-iH-EEE H u" PatentedAug. 25, 1931 UNITED STATES PATENT OFFICE ALBERT 'I. KELLER, 0FBETHLEHEM, PENNSYLVANIA, ASSIGNOR TO BETHLEHEM STEEL COMPANY, ACORPORATION OF PENNSYLVANIA MANIIPULATOR EOR ROLLING MILLS Applicationfiled February 8, 1930. Serial No. 426,818.

My invention relates to rolling mill feed tables and more especially toimprovements in mechanism for turning over and otherwise manipulatingingots, blooms, billets, slabs, rods and bars or the like articles ofvarious sizes, adaptedto be used in connection with rolling mills forturning'and shifting the article in order that it may enter thesuccessive roll passes, or between the reducing rolls 'n the requiredposition.

Although my apparatus may be used to mechanically manipulate ingot andbars of various sections on rolling mill feed tables for mills ofdifierenttypes, I will for the sake of conciseness and clearness ofdescrip-' tion, describe and illustrate my invention in .connection withwhat-is known as a bloomthe bloom are reciprocated vertically either infront of one of the side guards or 1n guide ways formed therein. Theside guards are adapted to be moved laterally over the rollers of thefeed table, and as the turning bars are raised vertically the extendingtoe or shoulder' on each turning bar engages the bloom and turns itthrough the desired arc of rotation which is usually 90. \Vith thisconstruction however, as the turning bars are raised the toes afterengaging the bloom and turning it slightly very often slip out of en-.

gagement with the bloom thereby allowing it to fall back into itsoriginal position or otherwise misplacing the bloom on the rollers ofthe feedtable without accomplishing the work desired. When this occursit has been necessary heretofore to retract the side guards then lowerthe turning bars, then advance the side guards until they engage theside of the bloom and then raise the turning bars again. .In this mannerconsiderable time is lost.

The object of my invention is to obviate the necessity of retracting theside guards and turning bars, in case the toes of the turning bars slipoil the bloom without turning it or accomplishing the work required.

For illustration I have shown my invention as applied to a movable sideguard but I wish it understood that I do not limit myself to this mannerof application as thedevice is equally well adapted for use with astationary side guard or may be applied to the frame of the table or anysimilar positionin the required manner to turn the work receivedthereon.

One of the objects of my invention is to mount the turning bars in sucha manner that the toes will positively engage the bloom on the upwardstroke of the turning bars but recede into the side guards out ofengagement with the bloom during the downward stroke of the turningbars.

Another object of my invention is to mount the turning bars in the sideguards so they can be lowered at all times without engaging the bloom. 1

With'this object in view I mount the turning bars in slide-ways having aby-pass formed in conjunction therewith on the face of one of'the sideguards. The upper ends of each of the turning bars are each pivoted to alever having means connected therewith adapted to raise and lower theturning bars while a weighted lever having one end pivoted to each ofthe turning bars at an intermediate point is slidably supported by arock-shaft which is journaled 1n bearings mounted on the machine. Theweighted levers are so mounted and pivoted to the turning bars in such amanner that when the turning bars are raised the weight on the end ofthe weighted levers will incline downwardly from the turning bars andswing the lower ends of the turning bars inwardly,

the same more clear, refer to the accompanying two sheets of drawingsforming a part of this specification and in whlch li e c arv actersrefer to like parts. 7

Fig. 1 is a top plan view of a portion of a rollin mill with parts ofthe frame 1n section s owin the table at one side of the reducing rollsand the manipulator associated with the table, embodying my Invention- 7Fig. 2 is a vertical transverse section taken on the line 22 of Fig. 1;

Figs. 3 and 4 are detail section views through the side guards and oneof the tuniing bars illustratin two alternative ways of constructing they-pass, the sections being taken substantially on the line 33 of Fi 2;and

ig. 5 is a horizontal section view taken on the line 5-5- of Fi 2.Referring now to t e var ous characters of reference upon the drawingsand first more particularly to Figs. 1, and 5, the

numeral 1 designates the reducing roll of a 55 blooming mill or thelike, on each slde of which is a feed table 2 and 3 composed of a seriesof rollers 4 supported in the side frames 5 of the tables and operatedpreferably by means of bevel gearing 6 1n the usual well known manner.

Arranged to move laterally over the rollers 4 of the feed tables atright angles to the axes of the rollers, are two side guards 7 and 8 thechief function of which is to shift the work laterally on the feedrollers so as to position the work for the des'iredpass of the reducingrolls. These side guards are preferably made heavy and rigidenough sothat they can be utilized to straighten the work should it be curved orbent by passing between the reducing rolls. v

Each of the two side guards 7 and 8 is supported and actuated by meansof two horlzontal arms or beams 9 and 10 serving as guides, which extendlaterally from the side guards at one side of the table and are actuatedby means of pinions 11 and 12 mounted on shafts 13 and 14 engaging rackteeth 15 and 16 on the underside of the arms or beams 9 and 10, anddriven by motors 17 and 18 through the reduction gearing 19 and 20. Theforward ends of thebeams 9 and 10 are slidably supported on slide-wa sbetween the tracks 24 and 25. These sli e-ways are protected fromfalling scale or other foreign substances by means of extension bars 21and 22 forming shields for the slide-ways, one end of each of which ispivoted at one end to one of the forward ends of the beams 9 and 10while the opposite ends extend outwardl therefrom and are supported bymeans 0 rollers 23.

In order to simplify the descri tion I have shown in Fig. 1 the rollerfee table with bloom manipulating means only one one side of. thereducing rolls but'it will be understood that a table with amanipulating means and mechanism for operating the same will be mountedat the opposite side of the reducing rolls 1 which table will beprovided with side ards similar to the side guards 7 and 8. n actualpractice it is desirable that the side guards at one side of one tableand the correspondin uard at the same side of the op osite tab e main-vtained in ali ent an actuated in unison through similar mechanism. Tothat end each shaft 13 and 14 is adapted to extend along the table onthe opposite side of the reducing rolls and have connected thereto thesame kind of an operating mechanism for each manipulating means.

A casting 26 connects the tops of the arms or beams 9 together which areadapted to operate theside guard 7, having two pairs of upwardlyextending brackets 27 and 28 in which is journaled at an intermediatepoint the rock shafts 29 and 30 having holes 31 formed therethrough forslidably supporting the weighted levers 32 and 33 each having a weightadjustablysecured to one end as at 34 while the opposite end is pivoted'as at 35 to the intermediate portion .of a

turning bar 36. The brackets 27 and 28 have journal bearings 37 and 38at ,their tops forming bearings forthe turning bar operating shafts 39and 40.

An arm 41 and a bell crank lever 42 is attached to each of the turningbar operating shafts 39 and 40. The end of one arm of each of the bellcrank levers being ivoted to or near the top of the turning ars whilethe other arm is pivoted to one end of a pitman 43, the opposite end ofthe pitman 43 being connected to crank arms 44 mounted on shaft 45 androtated by means of a pair of motors 46 through the reduction gearing47.

The turning bars 36 are each providedat their lower ends with a toe 48for enga 'ng and turning the bloom 49, these turning ars 36 are adaptedto reciprocate vertically in slide-ways 50 and by-passes 51. Each ofsaid turning bars having lateral projections 52 with inclined upper andlower faces 53 and 54. The projections 52 are adapted to engage the faceof the flanged edges 55 at the sides of a passageway 56. This passageway56 being wide enough to permit a turning bar 36 to pass between theflanged edges 55 when they are swung inward or out ward by the action ofthe weighted levers 32 and 33, after the projections 52 have passed endsof the retaining face plates 59 attached to the face of the side guards7. These ends of plates 59 engage the lateral projections 52 and limitthe outward swinging movement of the lower ends of the turning bars 36.The said ends of plates 59 being spaced apart to allow the toe 48 toextend outwardly between the same.

In Fig. 3 I have illustrated an alternative manner of constructing theby-pass in which the slide-way 50 is formed in and between the ends ofthe face plates 59 with an offset or flanged edge to limit the outwardmovement of the turning bars 36. The front face of the block 57 beingmounted in the recess 58 flush with the face of the side guard 7, and inFig. 4 I have shown another modification in which the by-pass 61,passageway 62 and flanged edges 63 are formed in the face of the sideguard 64. The slide-way and ends of face plates 59 being constructed thesame as in Fig. 3. 1

The operation of my device is as follows: Assuming that the parts are inthe position illustrated in Figs. 1, 2 and 5 and the motors 17 and 18for operating the two side guards 7 and 8 eithersingly or in unisonthrough the reduction gearin 19 and 20 shafts 13 and 14, pinions 11 an12 which engage rack teeth 15 and 16 on the underside of the arms orbeams 9 and 10 and to move it back and forth over the rollers to placethe work for the desired position or pass between the rolls and tostraighten the work 0 if it becomes necessary, and it is desired torotate the bloom 49, the turning bars 36 are raised by means of themotors 46 through the reduction gearing 47 which rotates the shaft 45and crank arms 44 a part of a revolution, thereby swinging the pitmen 43and bell crank lever 42 each of which has one arm pivoted to or near theupper end of the turning bars 36.

As indicated in Fig. 2 the turning bar 36 is shown in its loweredposition in full lines, in this position the weighted levers 32 and 33project the turning bars 36 forward so that the toe 48 extends under thebloom 49 and as the arms 41 and bell crank levers 42 are raised theturning bars travel upwardly in the slide-ways 50, the toes 48 engagingand turning the bloom the desired arc of rotation. When the turning bars36 have been raised the projections 52 will be raised above the flangededges 55 and the weighted levers 32 end 33 will then incline downwardlyfrom the turning bars 36 and the weights 34 thereon will slide thelevers downwardly through the holes 31 formed in the rock shafts 29 and30 and swing the lower ends of the turning bars 36 inward until the toes48 are inside the outer face of the side guard 7 as shown in dottedlines. In this position when the turning bars 36 are lowered they willslide downwardly in the by-pass 51 with the toes 48 inside the outerface of the side guard 7until the projections 52 are below the lowerends of the flanged edges 55, in this'position the weighted levers 32and 33 will incline upwardly from the turning bars36 and the weights 34thereon will project the lower ends of the turning bars 36 forward againinto the position indicated in full lines, so thatthetoes 48 will engagethe bloom 49 when the turning bars 36 are raised.

WVith my construction in case the toes. 48 slip out of engagement withthe bloom 49 before turning it the desired arc of rotation and the bloomfalls back into its original position or becomes otherwise misplaced itis only necessary to raise the turning bars to the position indicated indotted lines in Fig.

shown in full lines, and then advancethe side guards, in this way muchtime is saved in the operation of the device.

. It will be noted that when the turning bars 36 are in the loweredposition the weighted levers 32 and 33 each having one of their endspivoted thereto will incline upwardly from the turning bars and willproject the lower ends of the turning bars 36 forward, but as theturning bars are raised the upward movement of the pivoted ends of theweighted levers rotate the rock shafts 29 and 30. After 2 and-then lowerthe same to the position the pivoted end of the weighted levers pass thehorizontal plane of the center line of the rock shafts and passes abovethe angle of repose the weighted levers will then incline downwardlyfrom the turning bar and by action of the weight on the ends theweighted levers will slide downwardly through the holes 31 and retractthe lower ends of the turning bars. Although I have shown the weightedlevers as inclined at substantially the same angle above and below thehorizontal plane of the rock shafts in the raised, and lowered positionsof the turning bars I do not limit myself to this angle as it may begreater or less as desired, but in any case it will be understood thatin either the raised or lowered positions of the turning bars, theweighted levers pivoted thereto that the inclination of the weightedlevers when they incline upward or downward to operate must be above orbelow the angle of repose of the horizontal plane of the rock shafts 29and 30. Although I have described and illustrated my invention inconsiderable detail, I do not wish to be limited to the exact andspecific details thereof, as shown and described, but may use suchmodifications in substitutions for, or equivalents thereof, as areembraced within the scope of my invention, or as pointed out in theclaims.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

1. In a manipulator for rolling mill feed turning ba-rs each having anextending toe adapted to engage and turn the work on the table, andmeans for projecting the toes beyond the side face of the guard and forretracting the toes of the turning bars within the side face of theguard.

2. In a manipulator for rolling mill feed tables, a side guard movableover the table, pivoted turning bars each having an extending toeadapted to enga e and turn the work on the ta-blc, and sliding weightedmeanssecured to the turning bars for projecting and retracting the toesof theturnbars are raised, means for raising and lowering the turningbars, means for projecting the lower ends of the turning bars when theturning bars are lowered, said projecting means adapted when the turningbars are raised for retracting the toes at the lower ends of the turningbars inside the side face of the guard.

4. In a manipulator for rolling mill feed tables, a side ua-rd movablelaterally over the table, turmng bars pivoted at their upper ends andmovable with the side guard adapted to turn the work on the table, meansfor raising and lowering the turning bars in two vertical paths, meansfor shifting the turning bars from one path to the other, said shiftingmeans pivoted to the turning bars and adapted for projecting the lowerends of the turning bars in the lowered position and for retracting thelower end of the turning bars in the raised position.

5. In a manipulator for rolling mill feed tables, a side guard movablelaterally over the table, slide-ways formed in the side guard, a by-passformed at the side of each of the slide-ways, a pivoted turning bar foreach slide-way, means for raising the turning bars in the slide-ways,means for shifting the turning bars into alignment with the by-passesand means for lowering the turning bars in the by-passes. v

6. In a manipulator for rolling mill feed tables, a side guard movablelaterall over the table, slideways formed in the ace of the side guard,a bypass formed in conjunction with each slide-way, a pivoted turningbar adapted to be raised in each slideway and turn the work onthe table,means attached to the turning bars adapted to swing the turning barsinto vertical alignment with the bypass and means for lowering theturning bars in the by-passes.

7. In a manlpulator for rolling mill feed tables, a pair ofindependently operated side guards movable laterally over the table,

Lamaze slide-ways formed in the face of one of the side guards, aby-pass formed in conjunction with each slide-way, a turning bar pivotedat its upper end adapted to be raised in each slide-way and turn thework on the table and then lowered through the by-pass, a weighted leverattached to each turning bar adapted to swing the turning bars in one(llI'GCtlOIl' oted at its upper end and having an extending toe at itslower end adapted to be raised in each slide-way and turn the work onthe table, a weighted lever pivoted at one end to each of the turningbars, a rock-shaft for slidabl supporting the intermediate portion 0 theweighted levers, said weighted levers adapted to project the lower endsof the turning bars forward in their lowered position and retract theturning bars in the raised position, and means for lowering the turningbars in the by-pass.

9. In a manipulator for rolling mill feed tables, a side guard movablelaterally over the table, turning bars each pivoted at their upper endsand having a toe at their lower ends adapted to engage and turn the workon the table, and means for projecting the toes of the turning barsbeyond the working side face of the side guard and for retracting thetoes of the turning bars back of the working side face of the guard.

10. In a manipulator for rolling mill feed tables, a pair ofindependently operated side guards movable laterally over the table,slideways formed in the face of one of the side guards, a by-pass formedin conjunction with each SlldB-WZQQZL passageway between each of theslide-ways and the by-passes, a turning bar pivoted at its upper endhaving an extending toe at its lower end adapted to be raised in eachslide-way and turn the work on the table, a weighted lever pivoted atone end to each of the turning bars, rock-shafts having holestherethrough for slidably supporting the intermediate portions of theweighted levers, said weighted levers adapt ed to project the turningbars forward through the passageways between the bypasses and theslide-ways when the turning bars are in their lowered position andretract the turning bars in the raised position and means for loweringthe turning bars in the by-passes.

11. In a manipulator for rolling mill feed tables, a side guard movablelaterally over the table, slide-ways. and by-passes formed inconjunction with each other on the face of the side guard, a passagewaybetween each slide-way and by-pass, a turning bar. having a toe at thelower end adapted to be raised in each slide-way and lowered in theby-pass,

- lateral projections on the turning bars for posite sides of thepassageways, a turnmg' holding the turning bars in the slide-wa s orby-passes during the reciprocation o the turning bar, a Weighted leverhavm one end pivoted to each turning bar and a apted to project theturning bar forward through the passageway when in the lowered positionand to retract the turning bar when in raised position.

12. In a manipulator for rolling mill feed table, a side guard movablelaterally over the table, a slide-way formed in the face of the sideguard, a by-pass, a passageway between the slide-way and the by-pass,flanges on opposite sides of the passageway, a turn ing bar having meansattached thereto adapted to pro ect the turning bar 1n its loweredposition and to retract the turning bar in its raised position, andmeans for reciprocating the turning bars in the slideways and by-passes.

13. In a manipulator for rolling mill feed tables, a side guard movablelaterall over the table, a plurality of slide-ways ormed in the face ofthe side guard, a by-pass formed in conjunction with each slide-way inthe side guard, a passageway between each slide-way and the by-passes,flanges on opar for each slide-way having lateral rojections forengaging the flanges at the s1des of the passageways, means for raisingthe turning bars in the slide-ways, means for retracting the turningbars into vertical alignment with the by-passes, and means for loweringthe turning bars in the by-passes.

14. In a manipulator for rolling mill feed tables, a side guard movablelaterally over the table, a plurality of slide-ways formed in the faceof the side guard, a by-pass formed in conjunction with each slide-wayin the side guard, a passageway between each slideway and the by-passes,flanges on opposite sides of the passageway, a vertically movableturning bar for each slide-way having lateral projections for engagingthe flanges at the sides of the passageways during the vertical movementof the turning bars, means for raisin-g the turning bars in theslide-ways to turn the work on the table, means for retracting theturning bars when raised into vertical alignment with the by-passes, andmeans for lowering the turning bars in the by-passes.

15. In a manipulator for rolling mill feed table, a side guard movablelaterally over the table, a plurality of slide-ways formed in the faceof the side guard, a by-pass formed in conjunction with each slide-wayin the side guard, a passageway between each slide-way and by-passes,flanges on opposite sides of the passageways, a vertically movableturning bar for each slide-way having lateral projections near the lowerends for engaging the flanges at the sides of the passageways during thevertical movement of the turning bars, an extending toe formed at thelower end of each turning bar, means for raising the turning bars untilthe lateral projections are above the flanges at the sides of thepassageways and for the projecting toes to engage and turn the work onthe table, a weighted lever pivoted to each turning bar for retractingthe turning bars when raised into vertical alignment with the by-passes,means for lowering the turnin bars in the by-passes until the lateralpro ections are below the lower end of the flanges, and means forprojectin the lower end of the turning bars forward in the loweredposition.

16. In a manipulatorfor rollin mill feed tables, a side guard movablelatera ly over the table, recesses formed in the face of the side guard,a block seated in each recess having a by-pass and a passageway formedtherein, flanges at the side of saidpassageway, a slideway formed infront of each of the passa eways and flanges, a turning bar adapted ortable, recesses formed in the face of the side guard, a block seated ineach recess having a by-pass and a passageway formed therein, flanges atthe sides of said passageways, a turningbarhavinglateral projectionsadapted for vertical movement in each of the slideways and by-passes,means for raising the turning bars in the slide-ways until the lateralprojections are above the upper ends of the flanges at the sides of thepassageways, a weighted lever pivoted to each turning bar adapted toswing each turning bar into vertical alignment with the by-passeg, meansto lower the turning bars in the by-passes until the lateral projectionsare below the lower ends of the flanges at the sides of the passageways,said weighted levers adapted to project the turning bars forward throughthe passageways'when the turning bars are lowered, and plates on theface of the side guard for engagmg the lateral projections on theturning bars and to limit the forward movement of the turning bars.

18. In a manipulator for rolling mill feed tables. a side guard movablelaterally over the table, recesses formed in the face of the side guard,a block seated in each'recess having a by-pass and a passageway formedtherein, flanges at the sides of said passageways, a turning bar mountedfor vertical movement in the slide-ways in front of the passageways,means for reciprocating the turning bars, lateral projections on theturning bars for engaging the front face of the flanges at the side ofthe passageways when the turning bars are raised in the slide-ways, aweighted lever slidably supported on a rock shaft and attached to eachturning bar adapted to swing each of the turning bars into verticalalignment with the by-passes when the turning bars are raised above theflanges at the sides of the passageways. means for lowering the turningbars in the icy-passes, said weighted levers adapted to project theturning bars forward through the passageways after the turning bars havebeen lowered below the flanges at the side of the passageways, spacedplates secured to the face of the side guard having their ends extendingover a portion of the slide-ways for engaging the lateral projections onthe turning bars and to limit the forward movement of the turn- I ingbars.

19. In a manipulator for rolling mill feed tables, a side guard movablelaterally over the table, a plurality of slide-ways and bypassesformed'in conjunction with each other in the face of the side guard, apassageway between each of the slide-ways and the by passes, flanges atthe .side of said passageways, a turning bar having lateral projectionsformed near its lower end adapted to be raised in each of the slide-waysand lowered in the bypasses, and means for retracting the turning barsin the raised position and projecting the turning bars in the loweredposition.

20. In combination with vthe feed table of a rolling mill,- a side guardmovable laterally over the table, a plurality of slide-ways formed inthe face of the guard, a by-pass formed at the side of each slide-way, apassageway between each of the slide-ways and the by-passes, flanges atthe side of each passageway, a turning bar having lateral projec tionsadapted to be raised in each slide-way until the lateral projections areabove the flanges at the sides of the passageways, a weighted leverhaving one end pivoted to each turning bar and inclined downwardlytherefrom in the raised position for retracting the turning bars to aposition in vertical alignment with the by-passes, rock-shafts havingholes formed therein through which v the weighted levers extend forslidably supporting the intermediate portions of the weighted levers,means pivoted to each turn? ing bar for raising and lowering the turning bars in the slideways and by-passes, means for projecting theturning bars in the lowered position after the lateral projections havepassed below the flanges at the sides of the passageways, and plates onthe face of the side guards for limiting the forward movement of theturning bars.

21. In a manipulator for rolling mill feed tables, a side guard movablelaterally over the table,turning bars adapted to turn the work on thetable, aslide-way and by-pass formed in the guard for each turning barmeans for vertically reciprocating the turning bars in the slide-Waysand by-passes, means independent of the operating means for shifting theturning bars from the slideways to the by-passes, and for automaticallyprojecting the lower ends of the turning bars in their lowered position.t

22. In a manipulator for rolling mill feed tables, a side guard movablelaterally over the table, turning bars adapted to turn the work on thetable, means for raising and low-" ering the turning bars, means forautomatically projecting the lower ends of the turning bars in theirlowered position slidably mounted independently of the operating meansfor automatically retracting the lower end of the turning bars withinthe side face of the guard in their raised position.

23. In a manipulator, a work receiving table, a side guard, a turningbar having means for engaging the work on the table, a slideway andby-pass formed in the side guard means for raising the turning bar inthe slideway, means for shifting and lowering the turning bar in theby-pass and for projecting and retracting one end of the turning bar. I

24. In a manipulator, a work receiving tablo, a side guard, a pluralityof turning bars, a toe extending from the lower end of each turning barfor engaging the work on the" table, means for raising and lowering theturning bars in two vertical paths, means for shifting the turning barsfrom one path to the other and for projecting and retracting one end ofthe turning bars.

25. In a manipulator for rolling mill feed tables and the like, a frame,slide-Ways formed therein, turning bars adapted to be raised in theslide-ways in one vertical path and i o engage and turn the the work onthe table means for shifting the turning bars and lowering them inanother vertical path, and

for automatically projecting or retracting the turning bars at the endof each stroke.

26. In a manipulator, a work receiving tahie, a plurality of pivotedturning bars having means for engaging and turning the work on thetable, means for raising and lowering the turning bars in two verticalpaths, means for shifting the turning bars from one path to the otherand for projecting the lower ends of the turning bars in the loweredposition and for retracting the lower ends of the turning bars in theraised position.

27. In a manipulator for rolling mill feed tables, a work receivingtable, a side guard, turning bars mounted in the side guard having meansfor engaging and turning the work on the table, pivoted means attachedto the upper ends of the turning bars for raising and lowering theturning bars, and a slidably mounted weighted lever pivoted to eachturning bar for projecting and retracting the lower ends of the turningbars.

28. In a manipulator for rolling mill feed tables, a table for receivingthe work to be turned, turning bars having 0 aerating means pivoted attheir upper ends for raising and owering the turning bars, and slidingmeans pivoted to the turning bars and mounted independently of theoperating means for automatically projecting the lower end of theturning bars in their lowered position, and for automatically retractingthe lower ends of the turning bars in their raised position.

29. In a manipulator for rolling mill feed tables, a work receivingtable, vertically movable turning bars mounted onthe table, slidewaysformed in the table one for each turning bar, a by-pass at the side ofeach slideway and extending parallel therewith, a pas sage-way betweeneach slide-way and bypass, means for raising the turning bars in theslide-ways, means for retracting the lowor ends of the turning bars intheir raised position into alignment with the by-passes, means forlowering the turning bars in the lay-passes, and means for projectingthe turning bars through the passage-ways into the slide-ways in theirlowered position.

30. In a manipulator for rolling mill feed tables, slide-ways andby-passes formed on the table, vertically movable turning bars havingprojecting toes at their'lower ends for engaging and turning the work onthe table when the turning bars are raised, means pivoted to the upperend of each turning bar adapted to raise the turning bars in theslideways, means pivoted to each of the turning bars for retracting thelower ends of the turning bars into alignment with the by,- passes,means for lowering the turning bars in the by-passes, and means pivotedto the turning bars for projecting the lower end of the turning bars inthe lowered position.

31. In a manipulator for rolling mill feed tables, vertical slide-wayseach having a bypass formed in conjunction therewith in the table,pivoted turning bars each adapted to be raised in one of theslide-ways,meanspivoted at an intermediate point to each of the turning bars forretracting the lower ends of the turning bars into alignment with theupper ends of the by-passes in the raised position, means for loweringturning bars in the by-passes, and means for projecting the lower endsof the turning bars in their lowered position.

32. In a manipulator for rolling mill feed tables. or the like, a frame,slide-ways formed in the frame, a by-pass formed in conjunction witheach slide-way, a turning bar pivoted at its upper end having anextending toe at its lower end which is adapted when the turning barsare raised in each slide-way to turn the work on the table, a weightedlever pivoted at one end to each of the turning bars, a rock-shaft forslidably supporting the intermediate portion of the weighted levers,said weighted levers adapted tov project the lower ends of the turningbars forward in their lowered position and retractthe turning bars inthe raised position, and means for lowering the turning bars in theby-passes.

33. In a manipulator for rolling mill feed tables and the like, a frame,slide-Ways formed in the frame, a by-pass formed in conjunction witheach slide-way, a passageway between each of the slide-ways and theby-passes, a turning bar having operating means pivoted to its upperends and having an extending toe at its lower end adapted to be raisedin each slide-way and turn the work on the table, a weighted leverpivoted at one end to each of the turning bars, a rockshaft having,holes therethrough for slidably supporting the intermediate portions ofthe weighted levers, said weighted levers adapted to incline upwardlyfrom their pivotal points and project the turning bars forward throughthe passageways into the slide-ways when the turning bars are in theirlowered position and incline downwardly from their pivoted points andretract the turning bars in their raised position into alignment Withthe by-passes, and means pivoted to the upper ends of the turning barsfor lowering the turning bars in the bypasses.

In testimony whereof I hereunto aifix my signature.

ALBERT T. KELLER.

